Andrew de Quincey | 6bca358 | 2006-08-08 09:10:10 -0300 | [diff] [blame] | 1 | /* |
| 2 | Driver for Philips tda10086 DVBS Demodulator |
| 3 | |
| 4 | (c) 2006 Andrew de Quincey |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 20 | |
| 21 | */ |
| 22 | |
| 23 | #include <linux/init.h> |
| 24 | #include <linux/module.h> |
| 25 | #include <linux/moduleparam.h> |
| 26 | #include <linux/device.h> |
| 27 | #include <linux/jiffies.h> |
| 28 | #include <linux/string.h> |
| 29 | #include <linux/slab.h> |
| 30 | |
| 31 | #include "dvb_frontend.h" |
| 32 | #include "tda10086.h" |
| 33 | |
| 34 | #define SACLK 96000000 |
| 35 | |
| 36 | struct tda10086_state { |
| 37 | struct i2c_adapter* i2c; |
| 38 | const struct tda10086_config* config; |
| 39 | struct dvb_frontend frontend; |
| 40 | |
| 41 | /* private demod data */ |
| 42 | u32 frequency; |
| 43 | u32 symbol_rate; |
| 44 | }; |
| 45 | |
Andrew de Quincey | 07e19c2 | 2006-08-08 09:10:11 -0300 | [diff] [blame^] | 46 | static int debug = 0; |
Andrew de Quincey | 6bca358 | 2006-08-08 09:10:10 -0300 | [diff] [blame] | 47 | #define dprintk(args...) \ |
| 48 | do { \ |
| 49 | if (debug) printk(KERN_DEBUG "tda10086: " args); \ |
| 50 | } while (0) |
| 51 | |
| 52 | static int tda10086_write_byte(struct tda10086_state *state, int reg, int data) |
| 53 | { |
| 54 | int ret; |
| 55 | u8 b0[] = { reg, data }; |
| 56 | struct i2c_msg msg = { .flags = 0, .buf = b0, .len = 2 }; |
| 57 | |
| 58 | msg.addr = state->config->demod_address; |
| 59 | ret = i2c_transfer(state->i2c, &msg, 1); |
| 60 | |
| 61 | if (ret != 1) |
| 62 | dprintk("%s: error reg=0x%x, data=0x%x, ret=%i\n", |
| 63 | __FUNCTION__, reg, data, ret); |
| 64 | |
| 65 | return (ret != 1) ? ret : 0; |
| 66 | } |
| 67 | |
| 68 | static int tda10086_read_byte(struct tda10086_state *state, int reg) |
| 69 | { |
| 70 | int ret; |
| 71 | u8 b0[] = { reg }; |
| 72 | u8 b1[] = { 0 }; |
| 73 | struct i2c_msg msg[] = {{ .flags = 0, .buf = b0, .len = 1 }, |
| 74 | { .flags = I2C_M_RD, .buf = b1, .len = 1 }}; |
| 75 | |
| 76 | msg[0].addr = state->config->demod_address; |
| 77 | msg[1].addr = state->config->demod_address; |
| 78 | ret = i2c_transfer(state->i2c, msg, 2); |
| 79 | |
| 80 | if (ret != 2) { |
| 81 | dprintk("%s: error reg=0x%x, ret=%i\n", __FUNCTION__, reg, |
| 82 | ret); |
| 83 | return ret; |
| 84 | } |
| 85 | |
| 86 | return b1[0]; |
| 87 | } |
| 88 | |
| 89 | static int tda10086_write_mask(struct tda10086_state *state, int reg, int mask, int data) |
| 90 | { |
| 91 | int val; |
| 92 | |
| 93 | // read a byte and check |
| 94 | val = tda10086_read_byte(state, reg); |
| 95 | if (val < 0) |
| 96 | return val; |
| 97 | |
| 98 | // mask if off |
| 99 | val = val & ~mask; |
| 100 | val |= data & 0xff; |
| 101 | |
| 102 | // write it out again |
| 103 | return tda10086_write_byte(state, reg, val); |
| 104 | } |
| 105 | |
| 106 | static int tda10086_init(struct dvb_frontend* fe) |
| 107 | { |
| 108 | struct tda10086_state* state = fe->demodulator_priv; |
| 109 | |
| 110 | dprintk ("%s\n", __FUNCTION__); |
| 111 | |
| 112 | // reset |
| 113 | tda10086_write_byte(state, 0x00, 0x00); |
| 114 | msleep(10); |
| 115 | |
| 116 | // misc setup |
| 117 | tda10086_write_byte(state, 0x01, 0x94); |
| 118 | tda10086_write_byte(state, 0x02, 0x35); // NOTE: TT drivers appear to disable CSWP |
| 119 | tda10086_write_byte(state, 0x03, 0x64); |
| 120 | tda10086_write_byte(state, 0x04, 0x43); |
| 121 | tda10086_write_byte(state, 0x0c, 0x0c); |
| 122 | tda10086_write_byte(state, 0x1b, 0xb0); // noise threshold |
| 123 | tda10086_write_byte(state, 0x20, 0x89); // misc |
| 124 | tda10086_write_byte(state, 0x30, 0x04); // acquisition period length |
| 125 | tda10086_write_byte(state, 0x32, 0x00); // irq off |
| 126 | tda10086_write_byte(state, 0x31, 0x56); // setup AFC |
| 127 | |
| 128 | // setup PLL (assumes 16Mhz XIN) |
| 129 | tda10086_write_byte(state, 0x55, 0x2c); // misc PLL setup |
| 130 | tda10086_write_byte(state, 0x3a, 0x0b); // M=12 |
| 131 | tda10086_write_byte(state, 0x3b, 0x01); // P=2 |
| 132 | tda10086_write_mask(state, 0x55, 0x20, 0x00); // powerup PLL |
| 133 | |
| 134 | // setup TS interface |
| 135 | tda10086_write_byte(state, 0x11, 0x81); |
| 136 | tda10086_write_byte(state, 0x12, 0x81); |
| 137 | tda10086_write_byte(state, 0x19, 0x40); // parallel mode A + MSBFIRST |
| 138 | tda10086_write_byte(state, 0x56, 0x80); // powerdown WPLL - unused in the mode we use |
| 139 | tda10086_write_byte(state, 0x57, 0x08); // bypass WPLL - unused in the mode we use |
| 140 | tda10086_write_byte(state, 0x10, 0x2a); |
| 141 | |
| 142 | // setup ADC |
| 143 | tda10086_write_byte(state, 0x58, 0x61); // ADC setup |
| 144 | tda10086_write_mask(state, 0x58, 0x01, 0x00); // powerup ADC |
| 145 | |
| 146 | // setup AGC |
| 147 | tda10086_write_byte(state, 0x05, 0x0B); |
| 148 | tda10086_write_byte(state, 0x37, 0x63); |
| 149 | tda10086_write_byte(state, 0x3f, 0x03); // NOTE: flydvb uses 0x0a and varies it |
| 150 | tda10086_write_byte(state, 0x40, 0x64); |
| 151 | tda10086_write_byte(state, 0x41, 0x4f); |
| 152 | tda10086_write_byte(state, 0x42, 0x43); |
| 153 | |
| 154 | // setup viterbi |
| 155 | tda10086_write_byte(state, 0x1a, 0x11); // VBER 10^6, DVB, QPSK |
| 156 | |
| 157 | // setup carrier recovery |
| 158 | tda10086_write_byte(state, 0x3d, 0x80); |
| 159 | |
| 160 | // setup SEC |
| 161 | tda10086_write_byte(state, 0x36, 0x00); // all SEC off |
| 162 | tda10086_write_byte(state, 0x34, (((1<<19) * (22000/1000)) / (SACLK/1000))); // } tone frequency |
| 163 | tda10086_write_byte(state, 0x35, (((1<<19) * (22000/1000)) / (SACLK/1000)) >> 8); // } |
| 164 | |
| 165 | return 0; |
| 166 | } |
| 167 | |
| 168 | static void tda10086_diseqc_wait(struct tda10086_state *state) |
| 169 | { |
| 170 | unsigned long timeout = jiffies + msecs_to_jiffies(200); |
| 171 | while (!(tda10086_read_byte(state, 0x50) & 0x01)) { |
| 172 | if(time_after(jiffies, timeout)) { |
| 173 | printk("%s: diseqc queue not ready, command may be lost.\n", __FUNCTION__); |
| 174 | break; |
| 175 | } |
| 176 | msleep(10); |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | static int tda10086_set_tone (struct dvb_frontend* fe, fe_sec_tone_mode_t tone) |
| 181 | { |
| 182 | struct tda10086_state* state = fe->demodulator_priv; |
| 183 | |
| 184 | dprintk ("%s\n", __FUNCTION__); |
| 185 | |
| 186 | switch(tone) { |
| 187 | case SEC_TONE_OFF: |
| 188 | tda10086_write_byte(state, 0x36, 0x00); |
| 189 | break; |
| 190 | |
| 191 | case SEC_TONE_ON: |
| 192 | tda10086_write_byte(state, 0x36, 0x01); |
| 193 | break; |
| 194 | } |
| 195 | |
| 196 | return 0; |
| 197 | } |
| 198 | |
| 199 | static int tda10086_send_master_cmd (struct dvb_frontend* fe, |
| 200 | struct dvb_diseqc_master_cmd* cmd) |
| 201 | { |
| 202 | struct tda10086_state* state = fe->demodulator_priv; |
| 203 | int i; |
| 204 | u8 oldval; |
| 205 | |
| 206 | dprintk ("%s\n", __FUNCTION__); |
| 207 | |
| 208 | if (cmd->msg_len > 6) |
| 209 | return -EINVAL; |
| 210 | oldval = tda10086_read_byte(state, 0x36); |
| 211 | |
| 212 | for(i=0; i< cmd->msg_len; i++) { |
| 213 | tda10086_write_byte(state, 0x48+i, cmd->msg[i]); |
| 214 | } |
| 215 | tda10086_write_byte(state, 0x36, 0x08 | ((cmd->msg_len + 1) << 4)); |
| 216 | |
| 217 | tda10086_diseqc_wait(state); |
| 218 | |
| 219 | tda10086_write_byte(state, 0x36, oldval); |
| 220 | |
| 221 | return 0; |
| 222 | } |
| 223 | |
| 224 | static int tda10086_send_burst (struct dvb_frontend* fe, fe_sec_mini_cmd_t minicmd) |
| 225 | { |
| 226 | struct tda10086_state* state = fe->demodulator_priv; |
| 227 | u8 oldval = tda10086_read_byte(state, 0x36); |
| 228 | |
| 229 | dprintk ("%s\n", __FUNCTION__); |
| 230 | |
| 231 | switch(minicmd) { |
| 232 | case SEC_MINI_A: |
| 233 | tda10086_write_byte(state, 0x36, 0x04); |
| 234 | break; |
| 235 | |
| 236 | case SEC_MINI_B: |
| 237 | tda10086_write_byte(state, 0x36, 0x06); |
| 238 | break; |
| 239 | } |
| 240 | |
| 241 | tda10086_diseqc_wait(state); |
| 242 | |
| 243 | tda10086_write_byte(state, 0x36, oldval); |
| 244 | |
| 245 | return 0; |
| 246 | } |
| 247 | |
| 248 | static int tda10086_set_inversion(struct tda10086_state *state, |
| 249 | struct dvb_frontend_parameters *fe_params) |
| 250 | { |
| 251 | u8 invval = 0x80; |
| 252 | |
| 253 | dprintk ("%s %i %i\n", __FUNCTION__, fe_params->inversion, state->config->invert); |
| 254 | |
| 255 | switch(fe_params->inversion) { |
| 256 | case INVERSION_OFF: |
| 257 | if (state->config->invert) |
| 258 | invval = 0x40; |
| 259 | break; |
| 260 | case INVERSION_ON: |
| 261 | if (!state->config->invert) |
| 262 | invval = 0x40; |
| 263 | break; |
| 264 | case INVERSION_AUTO: |
| 265 | invval = 0x00; |
| 266 | break; |
| 267 | } |
| 268 | tda10086_write_mask(state, 0x0c, 0xc0, invval); |
| 269 | |
| 270 | return 0; |
| 271 | } |
| 272 | |
| 273 | static int tda10086_set_symbol_rate(struct tda10086_state *state, |
| 274 | struct dvb_frontend_parameters *fe_params) |
| 275 | { |
| 276 | u8 dfn = 0; |
| 277 | u8 afs = 0; |
| 278 | u8 byp = 0; |
| 279 | u8 reg37 = 0x43; |
| 280 | u8 reg42 = 0x43; |
| 281 | u64 big; |
| 282 | u32 tmp; |
| 283 | u32 bdr; |
| 284 | u32 bdri; |
| 285 | u32 symbol_rate = fe_params->u.qpsk.symbol_rate; |
| 286 | |
| 287 | dprintk ("%s %i\n", __FUNCTION__, symbol_rate); |
| 288 | |
| 289 | // setup the decimation and anti-aliasing filters.. |
| 290 | if (symbol_rate < (u32) (SACLK * 0.0137)) { |
| 291 | dfn=4; |
| 292 | afs=1; |
| 293 | } else if (symbol_rate < (u32) (SACLK * 0.0208)) { |
| 294 | dfn=4; |
| 295 | afs=0; |
| 296 | } else if (symbol_rate < (u32) (SACLK * 0.0270)) { |
| 297 | dfn=3; |
| 298 | afs=1; |
| 299 | } else if (symbol_rate < (u32) (SACLK * 0.0416)) { |
| 300 | dfn=3; |
| 301 | afs=0; |
| 302 | } else if (symbol_rate < (u32) (SACLK * 0.0550)) { |
| 303 | dfn=2; |
| 304 | afs=1; |
| 305 | } else if (symbol_rate < (u32) (SACLK * 0.0833)) { |
| 306 | dfn=2; |
| 307 | afs=0; |
| 308 | } else if (symbol_rate < (u32) (SACLK * 0.1100)) { |
| 309 | dfn=1; |
| 310 | afs=1; |
| 311 | } else if (symbol_rate < (u32) (SACLK * 0.1666)) { |
| 312 | dfn=1; |
| 313 | afs=0; |
| 314 | } else if (symbol_rate < (u32) (SACLK * 0.2200)) { |
| 315 | dfn=0; |
| 316 | afs=1; |
| 317 | } else if (symbol_rate < (u32) (SACLK * 0.3333)) { |
| 318 | dfn=0; |
| 319 | afs=0; |
| 320 | } else { |
| 321 | reg37 = 0x63; |
| 322 | reg42 = 0x4f; |
| 323 | byp=1; |
| 324 | } |
| 325 | |
| 326 | // calculate BDR |
| 327 | big = (1ULL<<21) * ((u64) symbol_rate/1000ULL) * (1ULL<<dfn); |
| 328 | big += ((SACLK/1000ULL)-1ULL); |
| 329 | do_div(big, (SACLK/1000ULL)); |
| 330 | bdr = big & 0xfffff; |
| 331 | |
| 332 | // calculate BDRI |
| 333 | tmp = (1<<dfn)*(symbol_rate/1000); |
| 334 | bdri = ((32 * (SACLK/1000)) + (tmp-1)) / tmp; |
| 335 | |
| 336 | tda10086_write_byte(state, 0x21, (afs << 7) | dfn); |
| 337 | tda10086_write_mask(state, 0x20, 0x08, byp << 3); |
| 338 | tda10086_write_byte(state, 0x06, bdr); |
| 339 | tda10086_write_byte(state, 0x07, bdr >> 8); |
| 340 | tda10086_write_byte(state, 0x08, bdr >> 16); |
| 341 | tda10086_write_byte(state, 0x09, bdri); |
| 342 | tda10086_write_byte(state, 0x37, reg37); |
| 343 | tda10086_write_byte(state, 0x42, reg42); |
| 344 | |
| 345 | return 0; |
| 346 | } |
| 347 | |
| 348 | static int tda10086_set_fec(struct tda10086_state *state, |
| 349 | struct dvb_frontend_parameters *fe_params) |
| 350 | { |
| 351 | u8 fecval; |
| 352 | |
| 353 | dprintk ("%s %i\n", __FUNCTION__, fe_params->u.qpsk.fec_inner); |
| 354 | |
| 355 | switch(fe_params->u.qpsk.fec_inner) { |
| 356 | case FEC_1_2: |
| 357 | fecval = 0x00; |
| 358 | break; |
| 359 | case FEC_2_3: |
| 360 | fecval = 0x01; |
| 361 | break; |
| 362 | case FEC_3_4: |
| 363 | fecval = 0x02; |
| 364 | break; |
| 365 | case FEC_4_5: |
| 366 | fecval = 0x03; |
| 367 | break; |
| 368 | case FEC_5_6: |
| 369 | fecval = 0x04; |
| 370 | break; |
| 371 | case FEC_6_7: |
| 372 | fecval = 0x05; |
| 373 | break; |
| 374 | case FEC_7_8: |
| 375 | fecval = 0x06; |
| 376 | break; |
| 377 | case FEC_8_9: |
| 378 | fecval = 0x07; |
| 379 | break; |
| 380 | case FEC_AUTO: |
| 381 | fecval = 0x08; |
| 382 | break; |
| 383 | default: |
| 384 | return -1; |
| 385 | } |
| 386 | tda10086_write_byte(state, 0x0d, fecval); |
| 387 | |
| 388 | return 0; |
| 389 | } |
| 390 | |
| 391 | static int tda10086_set_frontend(struct dvb_frontend* fe, |
| 392 | struct dvb_frontend_parameters *fe_params) |
| 393 | { |
| 394 | struct tda10086_state *state = fe->demodulator_priv; |
| 395 | int ret; |
| 396 | u32 freq = 0; |
| 397 | int freqoff; |
| 398 | |
| 399 | dprintk ("%s\n", __FUNCTION__); |
| 400 | |
| 401 | // set params |
| 402 | if (fe->ops.tuner_ops.set_params) { |
| 403 | fe->ops.tuner_ops.set_params(fe, fe_params); |
| 404 | if (fe->ops.i2c_gate_ctrl) |
| 405 | fe->ops.i2c_gate_ctrl(fe, 0); |
| 406 | |
| 407 | if (fe->ops.tuner_ops.get_frequency) |
| 408 | fe->ops.tuner_ops.get_frequency(fe, &freq); |
| 409 | if (fe->ops.i2c_gate_ctrl) |
| 410 | fe->ops.i2c_gate_ctrl(fe, 0); |
| 411 | } |
| 412 | |
| 413 | // calcluate the frequency offset (in *Hz* not kHz) |
| 414 | freqoff = fe_params->frequency - freq; |
| 415 | freqoff = ((1<<16) * freqoff) / (SACLK/1000); |
| 416 | tda10086_write_byte(state, 0x3d, 0x80 | ((freqoff >> 8) & 0x7f)); |
| 417 | tda10086_write_byte(state, 0x3e, freqoff); |
| 418 | |
| 419 | if ((ret = tda10086_set_inversion(state, fe_params)) < 0) |
| 420 | return ret; |
| 421 | if ((ret = tda10086_set_symbol_rate(state, fe_params)) < 0) |
| 422 | return ret; |
| 423 | if ((ret = tda10086_set_fec(state, fe_params)) < 0) |
| 424 | return ret; |
| 425 | |
| 426 | // soft reset + disable TS output until lock |
| 427 | tda10086_write_mask(state, 0x10, 0x40, 0x40); |
| 428 | tda10086_write_mask(state, 0x00, 0x01, 0x00); |
| 429 | |
| 430 | state->symbol_rate = fe_params->u.qpsk.symbol_rate; |
| 431 | state->frequency = fe_params->frequency; |
| 432 | return 0; |
| 433 | } |
| 434 | |
| 435 | static int tda10086_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *fe_params) |
| 436 | { |
| 437 | struct tda10086_state* state = fe->demodulator_priv; |
| 438 | u8 val; |
| 439 | int tmp; |
| 440 | u64 tmp64; |
| 441 | |
| 442 | dprintk ("%s\n", __FUNCTION__); |
| 443 | |
| 444 | // calculate the updated frequency (note: we convert from Hz->kHz) |
| 445 | tmp64 = tda10086_read_byte(state, 0x52); |
| 446 | tmp64 |= (tda10086_read_byte(state, 0x51) << 8); |
| 447 | if (tmp64 & 0x8000) |
| 448 | tmp64 |= 0xffffffffffff0000ULL; |
| 449 | tmp64 = (tmp64 * (SACLK/1000ULL)); |
| 450 | do_div(tmp64, (1ULL<<15) * (1ULL<<1)); |
| 451 | fe_params->frequency = (int) state->frequency + (int) tmp64; |
| 452 | |
| 453 | // the inversion |
| 454 | val = tda10086_read_byte(state, 0x0c); |
| 455 | if (val & 0x80) { |
| 456 | switch(val & 0x40) { |
| 457 | case 0x00: |
| 458 | fe_params->inversion = INVERSION_OFF; |
| 459 | if (state->config->invert) |
| 460 | fe_params->inversion = INVERSION_ON; |
| 461 | break; |
| 462 | default: |
| 463 | fe_params->inversion = INVERSION_ON; |
| 464 | if (state->config->invert) |
| 465 | fe_params->inversion = INVERSION_OFF; |
| 466 | break; |
| 467 | } |
| 468 | } else { |
| 469 | tda10086_read_byte(state, 0x0f); |
| 470 | switch(val & 0x02) { |
| 471 | case 0x00: |
| 472 | fe_params->inversion = INVERSION_OFF; |
| 473 | if (state->config->invert) |
| 474 | fe_params->inversion = INVERSION_ON; |
| 475 | break; |
| 476 | default: |
| 477 | fe_params->inversion = INVERSION_ON; |
| 478 | if (state->config->invert) |
| 479 | fe_params->inversion = INVERSION_OFF; |
| 480 | break; |
| 481 | } |
| 482 | } |
| 483 | |
| 484 | // calculate the updated symbol rate |
| 485 | tmp = tda10086_read_byte(state, 0x1d); |
| 486 | if (tmp & 0x80) |
| 487 | tmp |= 0xffffff00; |
| 488 | tmp = (tmp * 480 * (1<<1)) / 128; |
| 489 | tmp = ((state->symbol_rate/1000) * tmp) / (1000000/1000); |
| 490 | fe_params->u.qpsk.symbol_rate = state->symbol_rate + tmp; |
| 491 | |
| 492 | // the FEC |
| 493 | val = (tda10086_read_byte(state, 0x0d) & 0x70) >> 4; |
| 494 | switch(val) { |
| 495 | case 0x00: |
| 496 | fe_params->u.qpsk.fec_inner = FEC_1_2; |
| 497 | break; |
| 498 | case 0x01: |
| 499 | fe_params->u.qpsk.fec_inner = FEC_2_3; |
| 500 | break; |
| 501 | case 0x02: |
| 502 | fe_params->u.qpsk.fec_inner = FEC_3_4; |
| 503 | break; |
| 504 | case 0x03: |
| 505 | fe_params->u.qpsk.fec_inner = FEC_4_5; |
| 506 | break; |
| 507 | case 0x04: |
| 508 | fe_params->u.qpsk.fec_inner = FEC_5_6; |
| 509 | break; |
| 510 | case 0x05: |
| 511 | fe_params->u.qpsk.fec_inner = FEC_6_7; |
| 512 | break; |
| 513 | case 0x06: |
| 514 | fe_params->u.qpsk.fec_inner = FEC_7_8; |
| 515 | break; |
| 516 | case 0x07: |
| 517 | fe_params->u.qpsk.fec_inner = FEC_8_9; |
| 518 | break; |
| 519 | } |
| 520 | |
| 521 | return 0; |
| 522 | } |
| 523 | |
| 524 | static int tda10086_read_status(struct dvb_frontend* fe, fe_status_t *fe_status) |
| 525 | { |
| 526 | struct tda10086_state* state = fe->demodulator_priv; |
| 527 | u8 val; |
| 528 | |
| 529 | dprintk ("%s\n", __FUNCTION__); |
| 530 | |
| 531 | val = tda10086_read_byte(state, 0x0e); |
| 532 | *fe_status = 0; |
| 533 | if (val & 0x01) |
| 534 | *fe_status |= FE_HAS_SIGNAL; |
| 535 | if (val & 0x02) |
| 536 | *fe_status |= FE_HAS_CARRIER; |
| 537 | if (val & 0x04) |
| 538 | *fe_status |= FE_HAS_VITERBI; |
| 539 | if (val & 0x08) |
| 540 | *fe_status |= FE_HAS_SYNC; |
| 541 | if (val & 0x10) |
| 542 | *fe_status |= FE_HAS_LOCK; |
| 543 | |
| 544 | return 0; |
| 545 | } |
| 546 | |
| 547 | static int tda10086_read_signal_strength(struct dvb_frontend* fe, u16 * signal) |
| 548 | { |
| 549 | struct tda10086_state* state = fe->demodulator_priv; |
| 550 | u8 _str; |
| 551 | |
| 552 | dprintk ("%s\n", __FUNCTION__); |
| 553 | |
| 554 | _str = tda10086_read_byte(state, 0x43); |
| 555 | *signal = (_str << 8) | _str; |
| 556 | |
| 557 | return 0; |
| 558 | } |
| 559 | |
| 560 | static int tda10086_read_snr(struct dvb_frontend* fe, u16 * snr) |
| 561 | { |
| 562 | struct tda10086_state* state = fe->demodulator_priv; |
| 563 | u8 _snr; |
| 564 | |
| 565 | dprintk ("%s\n", __FUNCTION__); |
| 566 | |
| 567 | _snr = tda10086_read_byte(state, 0x1c); |
| 568 | *snr = (_snr << 8) | _snr; |
| 569 | |
| 570 | return 0; |
| 571 | } |
| 572 | |
| 573 | static int tda10086_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks) |
| 574 | { |
| 575 | struct tda10086_state* state = fe->demodulator_priv; |
| 576 | |
| 577 | dprintk ("%s\n", __FUNCTION__); |
| 578 | |
| 579 | // read it |
| 580 | *ucblocks = tda10086_read_byte(state, 0x18) & 0x7f; |
| 581 | |
| 582 | // reset counter |
| 583 | tda10086_write_byte(state, 0x18, 0x00); |
| 584 | tda10086_write_byte(state, 0x18, 0x80); |
| 585 | |
| 586 | return 0; |
| 587 | } |
| 588 | |
| 589 | static int tda10086_read_ber(struct dvb_frontend* fe, u32* ber) |
| 590 | { |
| 591 | struct tda10086_state* state = fe->demodulator_priv; |
| 592 | |
| 593 | dprintk ("%s\n", __FUNCTION__); |
| 594 | |
| 595 | // read it |
| 596 | *ber = 0; |
| 597 | *ber |= tda10086_read_byte(state, 0x15); |
| 598 | *ber |= tda10086_read_byte(state, 0x16) << 8; |
| 599 | *ber |= (tda10086_read_byte(state, 0x17) & 0xf) << 16; |
| 600 | |
| 601 | return 0; |
| 602 | } |
| 603 | |
| 604 | static int tda10086_sleep(struct dvb_frontend* fe) |
| 605 | { |
| 606 | struct tda10086_state* state = fe->demodulator_priv; |
| 607 | |
| 608 | dprintk ("%s\n", __FUNCTION__); |
| 609 | |
| 610 | tda10086_write_mask(state, 0x00, 0x08, 0x08); |
| 611 | |
| 612 | return 0; |
| 613 | } |
| 614 | |
| 615 | static int tda10086_i2c_gate_ctrl(struct dvb_frontend* fe, int enable) |
| 616 | { |
| 617 | struct tda10086_state* state = fe->demodulator_priv; |
| 618 | |
| 619 | dprintk ("%s\n", __FUNCTION__); |
| 620 | |
| 621 | if (enable) { |
| 622 | tda10086_write_mask(state, 0x00, 0x10, 0x10); |
| 623 | } else { |
| 624 | tda10086_write_mask(state, 0x00, 0x10, 0x00); |
| 625 | } |
| 626 | |
| 627 | return 0; |
| 628 | } |
| 629 | |
| 630 | static int tda10086_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings) |
| 631 | { |
| 632 | if (fesettings->parameters.u.qpsk.symbol_rate > 20000000) { |
| 633 | fesettings->min_delay_ms = 50; |
| 634 | fesettings->step_size = 2000; |
| 635 | fesettings->max_drift = 8000; |
| 636 | } else if (fesettings->parameters.u.qpsk.symbol_rate > 12000000) { |
| 637 | fesettings->min_delay_ms = 100; |
| 638 | fesettings->step_size = 1500; |
| 639 | fesettings->max_drift = 9000; |
| 640 | } else if (fesettings->parameters.u.qpsk.symbol_rate > 8000000) { |
| 641 | fesettings->min_delay_ms = 100; |
| 642 | fesettings->step_size = 1000; |
| 643 | fesettings->max_drift = 8000; |
| 644 | } else if (fesettings->parameters.u.qpsk.symbol_rate > 4000000) { |
| 645 | fesettings->min_delay_ms = 100; |
| 646 | fesettings->step_size = 500; |
| 647 | fesettings->max_drift = 7000; |
| 648 | } else if (fesettings->parameters.u.qpsk.symbol_rate > 2000000) { |
| 649 | fesettings->min_delay_ms = 200; |
| 650 | fesettings->step_size = (fesettings->parameters.u.qpsk.symbol_rate / 8000); |
| 651 | fesettings->max_drift = 14 * fesettings->step_size; |
| 652 | } else { |
| 653 | fesettings->min_delay_ms = 200; |
| 654 | fesettings->step_size = (fesettings->parameters.u.qpsk.symbol_rate / 8000); |
| 655 | fesettings->max_drift = 18 * fesettings->step_size; |
| 656 | } |
| 657 | |
| 658 | return 0; |
| 659 | } |
| 660 | |
| 661 | static void tda10086_release(struct dvb_frontend* fe) |
| 662 | { |
| 663 | struct tda10086_state *state = fe->demodulator_priv; |
| 664 | tda10086_sleep(fe); |
| 665 | kfree(state); |
| 666 | } |
| 667 | |
| 668 | static struct dvb_frontend_ops tda10086_ops = { |
| 669 | |
| 670 | .info = { |
| 671 | .name = "Philips TDA10086 DVB-S", |
| 672 | .type = FE_QPSK, |
| 673 | .frequency_min = 950000, |
| 674 | .frequency_max = 2150000, |
| 675 | .frequency_stepsize = 125, /* kHz for QPSK frontends */ |
| 676 | .symbol_rate_min = 1000000, |
| 677 | .symbol_rate_max = 45000000, |
| 678 | .caps = FE_CAN_INVERSION_AUTO | |
| 679 | FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | |
| 680 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | |
| 681 | FE_CAN_QPSK |
| 682 | }, |
| 683 | |
| 684 | .release = tda10086_release, |
| 685 | |
| 686 | .init = tda10086_init, |
| 687 | .sleep = tda10086_sleep, |
| 688 | .i2c_gate_ctrl = tda10086_i2c_gate_ctrl, |
| 689 | |
| 690 | .set_frontend = tda10086_set_frontend, |
| 691 | .get_frontend = tda10086_get_frontend, |
| 692 | .get_tune_settings = tda10086_get_tune_settings, |
| 693 | |
| 694 | .read_status = tda10086_read_status, |
| 695 | .read_ber = tda10086_read_ber, |
| 696 | .read_signal_strength = tda10086_read_signal_strength, |
| 697 | .read_snr = tda10086_read_snr, |
| 698 | .read_ucblocks = tda10086_read_ucblocks, |
| 699 | |
| 700 | .diseqc_send_master_cmd = tda10086_send_master_cmd, |
| 701 | .diseqc_send_burst = tda10086_send_burst, |
| 702 | .set_tone = tda10086_set_tone, |
| 703 | }; |
| 704 | |
| 705 | struct dvb_frontend* tda10086_attach(const struct tda10086_config* config, |
| 706 | struct i2c_adapter* i2c) |
| 707 | { |
| 708 | struct tda10086_state *state; |
| 709 | |
| 710 | dprintk ("%s\n", __FUNCTION__); |
| 711 | |
| 712 | /* allocate memory for the internal state */ |
| 713 | state = kmalloc(sizeof(struct tda10086_state), GFP_KERNEL); |
| 714 | if (!state) |
| 715 | return NULL; |
| 716 | |
| 717 | /* setup the state */ |
| 718 | state->config = config; |
| 719 | state->i2c = i2c; |
| 720 | |
| 721 | /* check if the demod is there */ |
| 722 | if (tda10086_read_byte(state, 0x1e) != 0xe1) { |
| 723 | kfree(state); |
| 724 | return NULL; |
| 725 | } |
| 726 | |
| 727 | /* create dvb_frontend */ |
| 728 | memcpy(&state->frontend.ops, &tda10086_ops, sizeof(struct dvb_frontend_ops)); |
| 729 | state->frontend.demodulator_priv = state; |
| 730 | return &state->frontend; |
| 731 | } |
| 732 | |
| 733 | module_param(debug, int, 0644); |
| 734 | MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); |
| 735 | |
| 736 | MODULE_DESCRIPTION("Philips TDA10086 DVB-S Demodulator"); |
| 737 | MODULE_AUTHOR("Andrew de Quincey"); |
| 738 | MODULE_LICENSE("GPL"); |
| 739 | |
| 740 | EXPORT_SYMBOL(tda10086_attach); |